#ifndef _ASM_X86_STRING_64_H

#define _ASM_X86_STRING_64_H

#ifdef __KERNEL__

/* Written 2002 by Andi Kleen */

/* Only used for special circumstances. Stolen from i386/string.h */

static __always_inline void *__inline_memcpy(void *to, const void *from, size_t n)

{

	unsigned long d0, d1, d2;

	asm volatile("rep ; movsl\n\t"

		     "testb $2,%b4\n\t"

		     "je 1f\n\t"

		     "movsw\n"

		     "1:\ttestb $1,%b4\n\t"

		     "je 2f\n\t"

		     "movsb\n"

		     "2:"

		     : "=&c" (d0), "=&D" (d1), "=&S" (d2)

		     : "0" (n / 4), "q" (n), "1" ((long)to), "2" ((long)from)

		     : "memory");

	return to;

}

/* Even with __builtin_ the compiler may decide to use the out of line

   function. */

#define __HAVE_ARCH_MEMCPY 1

#if (__GNUC__ == 4 && __GNUC_MINOR__ >= 3) || __GNUC__ > 4

extern void *memcpy(void *to, const void *from, size_t len);

#else

extern void *__memcpy(void *to, const void *from, size_t len);

#define memcpy(dst, src, len)					\

({								\

	size_t __len = (len);					\

	void *__ret;						\

	if (__builtin_constant_p(len) && __len >= 64)		\

		__ret = __memcpy((dst), (src), __len);		\

	else							\

		__ret = __builtin_memcpy((dst), (src), __len);	\

	__ret;							\

})

#endif

#define __HAVE_ARCH_MEMSET

void *memset(void *s, int c, size_t n);

#define __HAVE_ARCH_MEMMOVE

void *memmove(void *dest, const void *src, size_t count);

int memcmp(const void *cs, const void *ct, size_t count);

size_t strlen(const char *s);

char *strcpy(char *dest, const char *src);

char *strcat(char *dest, const char *src);

int strcmp(const char *cs, const char *ct);

#endif /* __KERNEL__ */

#endif /* _ASM_X86_STRING_64_H */